<template>
    <!-- 购物车有内容区域 -->
	<view class="cart-container" v-if="cart.length!==0">
            <!-- 收货地址区域 -->
            <my-address></my-address>
            
            <!-- 购物车商品列表标题区域 -->
            <view class="cart-title">
                <!-- 左侧图标 -->
                <uni-icons type="shop" size="18"></uni-icons>
                
                <!-- 右侧文本 -->
                <text>购物车</text>
            </view>
            
            <!-- 商品列表区域 -->
            <uni-swipe-action>
                <block v-for="(goods,index) in cart" :key="index">
                    <uni-swipe-action-item :options="options" @click="swipeItemClickHandler(goods)">
                        <my-goods :goods="goods" :showRadio="true" :showNum="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
                    </uni-swipe-action-item>
                </block>
            </uni-swipe-action>
            
            <!-- 自定义结算组件 -->
            <my-settle></my-settle>
    </view>
    
    <!-- 购物车为空区域 -->
    <view class="empty-cart" v-else>
        <image src="/static/cart_empty@2x.png" class="empty-img"></image>
        <text>空空如也</text>
    </view>
</template>

<script>
    import badgeMix from '@/mixins/tabbar-badge.js'
    import { mapState, mapMutations } from 'vuex'
    
	export default {
        mixins: [badgeMix],
        
		data() {
			return {
				options: [{
                    text: '删除',
                    style: {
                        backgroundColor: '#C00000'
                    }
                }]
			};
		},
        
        methods: {
            ...mapMutations('m_cart',['updataGoodsState','updataGoodsCount', 'removeGoodsById']),
            
            radioChangeHandler(e) {
                this.updataGoodsState(e)
            },
            
            // 监听购物车数量自定义事件
            numberChangeHandler(e) {
                this.updataGoodsCount(e)
            },
            
            swipeItemClickHandler(goods) {
                this.removeGoodsById(goods)
            }
        },
        
        computed: {
            ...mapState('m_cart', ['cart'])
        }
	}
</script>

<style lang="scss">
    .cart-container {
        padding-bottom: 50px;
    }
        .cart-title {
            height: 40px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid #efefef;
            padding-left: 5px;
            
            text {
                margin-left: 10px;
                font-size: 14px;
            }
        }
        
    .empty-cart {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding-top: 180px;
        
        .empty-img {
            width: 90px;
            height: 90px;
        }
        
        text {
            font-size: 12px;
            color: gray;
            margin-top: 15px;
        }
    }
</style>
